Put it at the very end of a kill sequence, after an Enemy Spotted cue sets up the target and the action peaks, then follow it with an Inception Horn sting to underline the victory.
關於此聲音
This three-second voice line is spoken in a low, steady voice that delivers a threat to a beaten rival, naming Viper as the sender after the mention of hell. It feels dark and tense, with a calm confidence that makes the defeat sound final and personal, like a winner closing a fight with one last line.